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May i just say that you need to SLOW THE HECK DOWN BOY!!!!!! So far, both the supercharger kits you mentioned, will blow up your engine, and leave you with no money and a broken car, and if you could detune the car so far to make those power hungry monsters work safley on the car it would be the same as if you put a 2.6L Kenne bell or a Vortech V3 Intercooled, on your mustang, expect you just spent WAY MORE for NOTHING
If i was you i would focus on supporting mods rather then the biggest supercharger you could find.... Its not all about power my friend, Ive beaten Supercharged GT's because all they did was through a Twin screw on the car and did nothing to the Tires or suspension. Granted, they will beat me on the freeway all day, but 1/4 mile it comes DUMB close.
Get a 5k Supercharger kit, get it installed and Dyno tuned for 1k, Get some suspension & good tires for 2k installed and some gears 3.73 for twinscrew and 4.10's for Centerfuge for 500ish installed. Now you got yourself a Fast, Fun, Supercharged, BEAST. Just keep the Boost/PSI under 11ish, and or 450RWHP seems to be the magic number, after you cross the bottom end will blow up. Granted, there are no safe routs to go while putting boost in an engine. And there are factory freaks out there, like my friend with an 550RWHP+ Hellion Turbo Mustang GT on stock block. But dont asume your so lucky.
Ohh and, you can save 1-2k on a supercharger kit buying used, Just make sure it came from a decent driver, and had not been abused. Most superchargers will last longer then the engine now'a'days.
Goodluck with what ever you choose to do.
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My Car - 2007 Alloy GT Mustang Coupe Automatic.
Steeda CAI, UDP//SCT Xcal II //Magnaflow 2.5" duel Cat-back//Pypes Off Road H-pipe//FRPP 4.10 Gears. Shelby 14" Break kit//Vogtland Springs //J&M Billet LCA, UCA, double adj Panhard Bar, Camber Plate.
I was putting down 493 to the wheels on my D1sc Procharger before I decided that I wanted to turn up the boost it is very costly when you want to get above 11 to 12 pounds of boost and have the engine to hold up. You really need to do a lot of research. The fuel system will need to be upgraded along with new injectors and fuel rails. New motor mounts and much more.
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Procharged 05 GT
Engine build up in progress
493 Rwhp
440 Rwtrq
11.46 @ 122.6
What the hell? Did my post disappear? Anyway, 450rwhp is in no way the limit on these cars. Most intercooled kits have canned tunes for plenty more HP than that right now. Gears should be chosen based on full application and purpose of car.
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Whipple Crew-10psi-Spec II-BMR LCAs-BMR sway bar delete-Spydershaft-M/T 26x11.5x17-Hurst-Prothane Mounts-PMP Line locks-Flows-Thump_rrr-Moroso separator-11.39@119mph
Daily Driver-2010 Prius-52.3mpg since new
Beater-1995 F150 XL-302 5spd
450rwhp is in no way the limit on these cars. Most intercooled kits have canned tunes for plenty more HP than that right now.
What kits are you talking about? Actualy there are Very few kits meant for the stock block that will make "Plenty" more hp then 450 at the wheels.
Guess it depends on your idea of plenty is though... my idea of plenty is 490+ and your crazy if you think the stock block will handle that without effecting its life spand with a supercharger.
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My Car - 2007 Alloy GT Mustang Coupe Automatic.
Steeda CAI, UDP//SCT Xcal II //Magnaflow 2.5" duel Cat-back//Pypes Off Road H-pipe//FRPP 4.10 Gears. Shelby 14" Break kit//Vogtland Springs //J&M Billet LCA, UCA, double adj Panhard Bar, Camber Plate.
You can buy a 550hp whipple kit from any ford dealer that is designed for the stock block. I've been running 11 psi and 488rwhp down the drag strip for quite some time without so much as a hiccup. After you've been on the forum for a while, you'll find that most boosted members are running high output kits in excess of 450rwhp and there are only a couple of failures attributed to bad tuning or user error. There are now several members running in excess of 500rwhp. The S197 block is in no way limited to 450 rwhp. That myth has been busted since 2006 at least. I'm not crazy, I'm an experienced performance tech that knows the real limits of this motor.
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Whipple Crew-10psi-Spec II-BMR LCAs-BMR sway bar delete-Spydershaft-M/T 26x11.5x17-Hurst-Prothane Mounts-PMP Line locks-Flows-Thump_rrr-Moroso separator-11.39@119mph
Daily Driver-2010 Prius-52.3mpg since new
Beater-1995 F150 XL-302 5spd
I think you need to do a lot more research man. All of the kits you have described will grenade a stock block no problem. Take a look at brenspeed.com, and through their various supercharger packages. That should give you a good idea of whats out there. Who tunes the car is more important than anything else. Generally speaking, people say up to 440rwhp or so is "safe", however there are no guarantees.
__________________ 2009 Black GT 5spd, Vortech V3 Supercharger, Brenspeed 91 Tune
3.73 gears, Shaftmasters driveshaft, other stuff, 400 RWHP
fact of the matter is you will blow up ur car faster then a kid with some gas u need to calm down and read alot more u clearly dont know what your doin and by my guess why you are doin it. i dont want to sound like an ass but damn man dont waste 40k+ if u can afford to lose it crank up the boost and video tape it plz
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"The boatman always asks a high price"
2010 white GT prem
1990 5.0 lx ssp (gone but never forgotten)
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My Car - 2007 Alloy GT Mustang Coupe Automatic. 
